Local FRP-Reinforcement of Clay Hollow Block Panels under Shear Loading

Antonio Borri, Marco Corradi, Romina Sisti, Alessio Molinari, Chiara Quintaliani

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


The use of clay hollow blocks is common for new constructions in many parts of Europe. The results of 8 full-scale shear tests of block-masonry panels (dimensions 1.60x0.90x0.25 m) are reported in this paper. Non-defective and defective wall panels were tested in shear in the laboratory. Typical failure modes are investigated, not previously reported in the scientific literature. Test results show that the lateral load capacity of the panels is highly affected by construction defects. Furthermore, CFRPs were used in this research as local reinforcement (repair) in the area around the cracks previously opened in the masonry material. The lateral capacity for CFRP-repaired panels was restored to the original value of non-defective panels, indicating that the CFRP-repair of cracked panels is viable solution. An explanation for this phenomenon is suggested, which indicates that the high tensile strength of CFRPs can be effective in repairing cracked block-masonry. It is also argued that this large stress level of the CFRPs leads to a premature tensile CFRP crisis or a splitting failure of the blocks’ shells.

Original languageEnglish
Title of host publicationMechanics of Masonry Structures Strengthened with Composite Materials III
EditorsAngelo Di Tommaso, Cristina Gentilini, Giovanni Castellazzi
PublisherTrans Tech Publications Ltd
Number of pages8
VolumeKEM 817
ISBN (Electronic)9783035735659
ISBN (Print)9783035715651
Publication statusPublished - 16 Aug 2019
Externally publishedYes
Event6th International Conference on Mechanics of Masonry Structures Strengthened with Composite Materials - Bologna, Italy
Duration: 26 Jun 201928 Jun 2019
Conference number: 6

Publication series

NameKey Engineering Materials
Publisher Trans Tech Publications Ltd
VolumeKEM 817
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795


Conference6th International Conference on Mechanics of Masonry Structures Strengthened with Composite Materials
Abbreviated titleMuRiCo6 2019

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